Compositions and processes for removing hair color

Abstract

COMPOSITIONS AND PROCESSES FOR REMOVING HAIR COLOR The disclosure relates to compositions and processes for removing color from keratinous fibers such as hair. The compositions include (a) at least one reducing agent selected from glutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid, citric acid, or combinations of two or more of these, (b) at least one amino acid, (c) optionally, at least one amine compound, and (d) at least one solvent. Figure for abstract: none

Description

Title of the invention: COMPOSITIONS AND METHODS FOR removing hair color technical field

[0001] This disclosure relates to compositions and processes for removing color from keratinous fibers, such as hair. BACKGROUND

[0002] Consumers often wish to change their hair color. For example, as a person ages, the hair follicle loses its natural pigment, resulting in gray, silver, or white hair. It is common for consumers to dye their gray hair, for example, to match their natural color. Similarly, consumers may want to change their hair color from their natural color. For example, consumers often wish to lighten or darken their hair color.

[0003] However, the process of changing hair color is complex, particularly when permanent (oxidative) hair dyes are used. In some cases, the process requires that the natural pigment (melanin) in the hair fiber be destroyed before adding the dye molecules of the desired color. This process is generally used when an individual wishes to change their hair color to a shade lighter than their natural color, by dissolving the melanin with an oxidizing agent before the oxidative dye molecules penetrate the hair, where they achieve the target shade by undergoing a chemical reaction with the oxidizing agent.If a person wishes to change their hair color to a shade darker than their natural shade, it may not be necessary to destroy the melanin in the hair, but the oxidative dye must still undergo a reaction with an oxidizing agent to achieve the target shade.

[0004] However, if a person who has previously changed the color of their hair with a first oxidative dye wishes to change the color of their previously colored hair to obtain a second color or shade, the first oxidative dye, which cannot be removed by washing, must be neutralized so that it no longer transmits the first color to the hair fiber. Although there are known methods for removing the first hair color by neutralizing (reducing) the first molecules of oxidative dye, these methods are not completely satisfactory because the first molecules of oxidative dye can reoxidize, thus interfering with the consumer's ability to obtain the desired second color or shade. Other known methods for removing the The first hair colorings used oxidizing agents, but these compositions are aggressive and cause damage to the hair, making it weak, brittle and giving it an unhealthy appearance.

[0005] It has now been discovered, surprisingly, that a synergistic combination of components unexpectedly removes oxidative hair dyes in a way that also prevents the dyes from reoxidizing. The combination of components can therefore be used to modify the overall hair color by removing all or almost all of the previously applied color, or to remove only certain colors or shades, in order to vary the hair color or tone without removing all the color (for example, to change the hair color to a warmer or cooler tone). SUMMARY

[0006] The disclosure relates to compositions and processes that successfully remove hair color, in particular hair that has been previously dyed with an oxidative dye composition.

[0007] In various embodiments, the disclosure relates to compositions for the treatment of keratinous fibers such as hair, the composition comprising (a) at least one reducing agent selected from glutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid, citric acid, or combinations of two or more of these, (b) at least one amino acid, (c) optionally, at least one amine compound, and (d) at least one solvent. The amino acid may, in various embodiments, be selected from betaine, aspartic acid, glutamic acid, alanine, arginine, omithine, citrulline, asparagine, carnitine, cysteine, glutamine, glycine, histidine, lysine, isoleucine, leucine, methionine, N-phenylalanine, proline, serine, taurine, threonine, tryptophan, tyrosine, valine, or combinations of two or more of these.If present, the amine compound may, in various embodiments, comprise, consist essentially of, or consist of monoethanolamine. The solvent may be chosen from water and / or non-aqueous solvents. The compositions are useful for treating keratinous fibers such as hair to remove artificial hair color, such as oxidative dyes.

[0008] In various embodiments, the total amount of reducing agent (a) may range from approximately 0.1% to approximately 20%, from approximately 1% to approximately 18%, from approximately 2% to approximately 15%, or from approximately 4% to approximately 12% by weight, relative to the total weight of the composition. In some embodiments, the total amount of reducing agent (a) ranges from approximately 3% to approximately 7%, from approximately 4% to approximately 6%, or is approximately 5% by weight, relative to the total weight of the composition. In other In some embodiments, the total amount of reducing agents (a) ranges from approximately 8% to approximately 12%, from approximately 9% to approximately 11%, or is approximately 10% by weight, relative to the total weight of the composition. In some embodiments, the compositions are free from or substantially free from reducing agents other than glutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid, and / or citric acid. In some embodiments, glutaric acid is α-ketoglutaric acid.

[0009] In various embodiments, the total amount of amino acids (b) may range from approximately 0.1% to approximately 10%, from approximately 0.5% to approximately 8%, from approximately 1% to approximately 6%, or from approximately 1% to approximately 5% by weight, relative to the total weight of the composition. Optionally, the amino acids may comprise, consist essentially of, or consist of proline, betaine, arginine, glycine, or a combination of two or more of these.

[0010] In various embodiments, the compositions comprise at least one amine compound, which may be present in an amount ranging from approximately 0.1% to approximately 20%, from approximately 1% to approximately 20%, from approximately 2% to approximately 15% by weight, or from approximately 3% to approximately 10% by weight, relative to the total weight of the composition. The amine compound may, in some embodiments, comprise, consist essentially of, or consist of monoethanolamine. In various embodiments, the compositions comprise monoethanolamine in an amount ranging from approximately 1% to approximately 12% by weight, such as from approximately 1.5% to approximately 10%, from approximately 2% to approximately 8%, or from approximately 3% to approximately 7% by weight, relative to the total weight of the composition.

[0011] Optionally, the compositions may include one or more additional components, such as carboxylic acids and / or salts thereof, surfactants, thickening agents, clay compounds, fatty compounds, or the like. In various embodiments, the compositions are free or substantially free of various components such as cationic surfactants, sulfites, bisulfites, metabisulfites, persulfates, peroxides, and / or ammonia.

[0012] The compositions are typically acidic, for example may have a pH ranging from about 1 to about 6, such as from about 2 to about 5, from about 2.5 to about 5, from about 2.75 to about 4.75 or from about 3 to about 4.5.

[0013] In embodiments given by way of example, the disclosure relates to compositions for removing hair color, compositions comprising: (a) at least one reducing agent selected from glutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid, citric acid, or combinations of two or more of these, (b) at least one amino acid, (c) optionally, at least one amine compound, and (d) at least one solvent; where the composition further comprises at least one component selected from thickening agents, clay compounds, carboxylic acids, anionic surfactants, non-ionic surfactants, amphoteric / zwitterionic surfactants, or combinations thereof; where the composition has a pH ranging from about 1 to about 6;and optionally where the composition is free or substantially free of reducing agents other than glutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid and / or citric acid. In other embodiments given by way of example, the disclosure relates to compositions for the removal of hair color, compositions comprising: (a) at least one reducing agent selected from glutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid, citric acid or combinations of two or more of these, (b) at least one amino acid, (c) at least one amine compound, and (d) at least one solvent;where the composition further comprises at least one component selected from thickening agents, fatty compounds, clay compounds, carboxylic acids, anionic surfactants, non-ionic surfactants, amphoteric / zwitterionic surfactants, or combinations thereof; where the composition has a pH ranging from about 1 to about 6;and optionally where the composition is free or substantially free of reducing agents other than glutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid and / or citric acid. In still other examples of embodiments, the disclosure relates to compositions for removing hair color, compositions comprising: (a) at least one reducing agent selected from glutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid, citric acid, or combinations of two or more of these, (b) at least one amino acid, (c) monoethanolamine, and (d) at least one solvent;where the composition further comprises at least one component selected from thickening agents, fatty compounds, clay compounds, carboxylic acids, anionic surfactants, non-ionic surfactants, amphoteric / zwitterionic surfactants, or combinations thereof; where the composition has a pH ranging from about 1 to about 6; and optionally where the composition is free from or substantially free from reducing agents other than glutaric acid, glyoxyethyl acid, thioglycolic acid, glycolic acid, and citric acid.

[0014] In other embodiments given by way of example, the disclosure relates to compositions for the removal of hair color, the compositions comprising: (a) at least one reducing agent selected from glutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid, citric acid or combinations of two or more thereof, (b) at least one amino acid selected from proline, betaine, arginine, glycine or a combination of two or more of these, (c) optionally, at least one amine compound, and (d) at least one solvent; wherein the composition further comprises at least one component selected from thickening agents, clay compounds, carboxylic acids, anionic surfactants, nonionic surfactants, amphoteric / zwitterionic surfactants, or combinations thereof; wherein the composition has a pH ranging from about 1 to about 6;and optionally where the composition is free or substantially free of reducing agents other than glutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid and / or citric acid. In other embodiments given by way of example, the disclosure relates to compositions for removing hair color, compositions comprising: (a) at least one reducing agent selected from glutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid, citric acid or combinations of two or more of these, (b) at least one amino acid selected from proline, betaine, arginine, glycine or a combination of two or more of these, (c) at least one amine compound, and (d) at least one solvent;where the composition further comprises at least one component selected from thickening agents, clay compounds, carboxylic acids, anionic surfactants, non-ionic surfactants, amphoteric / zwitterionic surfactants, or combinations thereof; where the composition has a pH ranging from about 1 to about 6;and optionally where the composition is free or substantially free of reducing agents other than glutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid and / or citric acid. In still other examples of embodiments, the disclosure relates to compositions for removing hair color, compositions comprising: (a) at least one reducing agent selected from glutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid, citric acid, or combinations of two or more of these, (b) at least one amino acid selected from proline, betaine, arginine, glycine or a combination of two or more of these, (c) monoethanolamine, and (d) at least one solvent;where the composition further comprises at least one component selected from thickening agents, clay compounds, carboxylic acids, anionic surfactants, non-ionic surfactants, amphoteric / zwitterionic surfactants, or combinations thereof; where the composition has a pH ranging from about 1 to about 6; and optionally where the composition is free from or substantially free from reducing agents other than glutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid and / or citric acid.

[0015] In additional embodiment examples, the disclosure relates to compositions for removing hair color, compositions comprising: (a) of α-ketoglutaric acid, and optionally at least one additional reducing agent selected from glutaric acid compounds other than α-ketoglutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid, and / or citric acid, (b) at least one amino acid, (c) optionally, at least one amine compound, and (d) at least one solvent; wherein the composition further comprises at least one component selected from thickening agents, fatty compounds, clay compounds, carboxylic acids, anionic surfactants, non-ionic surfactants, amphoteric / zwitterionic surfactants, or combinations thereof; wherein the composition has a pH ranging from about 1 to 6;and optionally where the composition is free or substantially free of reducing agents other than glutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid and / or citric acid. In other embodiments given by way of example, the disclosure relates to compositions for removing hair color, compositions comprising: (a) α-ketoglutaric acid, and optionally at least one additional reducing agent selected from glutaric acid compounds other than α-ketoglutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid and / or citric acid, (b) at least one amino acid, (c) at least one amine compound, and (d) at least one solvent;where the composition further comprises at least one component selected from thickening agents, fatty compounds, clay compounds, carboxylic acids, anionic surfactants, non-ionic surfactants, amphoteric / zwitterionic surfactants, or combinations thereof; where the composition has a pH ranging from about 1 to about 6;and optionally where the composition is free or substantially free of reducing agents other than glutaric acid, glyoxylic acid, thioglycolic acid, glycolic acid and / or citric acid. In still other examples of embodiments, the disclosure relates to compositions for removing hair color, compositions comprising: (a) α-ketoglutaric acid, and optionally at least one additional reducing agent selected from glutaric acid compounds other than α-ketoglutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid and / or citric acid, (b) at least one amino acid, (c) monoethanolamine, and (d) at least one solvent;where the composition further comprises at least one component selected from thickening agents, fatty compounds, clay compounds, carboxylic acids, anionic surfactants, non-ionic surfactants, amphoteric / zwitterionic surfactants, or combinations thereof; where the composition has a pH ranging from 1 to about 6; and optionally where the composition is free from or substantially free from other reducing agents; than glutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid and citric acid.

[0016] In various embodiments, the disclosure relates to compositions for removing hair color, the composition comprising (a) at least one reducing agent selected from glutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid, citric acid, or combinations of two or more of these, (b) at least one amino acid, (c) monoethanolamine and (d) water; wherein the composition further optionally comprises at least one component selected from thickening agents, fatty compounds, clay compounds, carboxylic acids, anionic surfactants, nonionic surfactants, amphoteric / zwitterionic surfactants, or combinations thereof; wherein the composition has a pH ranging from about 1 to about 6;and optionally where the composition is free or substantially free of reducing agents other than glutaric acid, glyoxylic acid, thioglycolic acid, glycolic acid and / or citric acid.

[0017] In other embodiments, the disclosure relates to compositions for removing hair color, the composition comprising (a) α-ketoglutaric acid, and optionally at least one additional reducing agent selected from glutaric acid compounds other than α-ketoglutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid and / or citric acid, (b) at least one amino acid selected from proline, betaine, arginine, glycine or a combination of two or more of these, (c) optionally monoethanolamine, and (d) at least one solvent; where the composition also optionally includes at least one component selected from thickening agents, fatty compounds, clay compounds, carboxylic compounds, anionic surfactants, non-ionic surfactants, amphoteric / zwitterionic surfactants, or combinations thereof;where the composition comprises a pH ranging from 1 to about 6; and where the composition is optionally free or substantially free of reducing agents other than glutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid and / or citric acid.

[0018] The disclosure also relates to hair treatment processes using the compositions according to the disclosure. For example, the processes may be processes for removing oxidative hair dyes. In some embodiments, a composition according to the disclosure may be applied to the hair and left on the hair for a period of time, for example, up to about 2 hours, such as from about 30 seconds to about 2 hours, from about 1 minute to about 1 hour, from about 1 minute to about 45 minutes, or from about 1 minute to approximately 30 minutes, from approximately 5 minutes to approximately 1 hour, from approximately 5 minutes to approximately 45 minutes, from approximately 5 minutes to approximately 30 minutes, etc. The processes may also include rinsing the hair. DETAILED DESCRIPTION

[0019] The disclosure relates to compositions and processes for removing color, in particular color imparted by previously applied oxidative dyes, from hair. The color removal benefits according to various embodiments can be long-lasting, for example, lasting at least 7 days, at least 1 month, at least 2 months, etc. COMPOSITIONS

[0020] The compositions according to the disclosure include at least one reducing agent, at least one amino acid, at least one solvent and, optionally, at least one amine compound. Reducing agents

[0021] The compositions according to the disclosure comprise at least one reducing agent selected from glutaric acid (which expressly includes its ketone derivatives, α-ketoglutaric acid and β-ketoglutaric acid), glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid, citric acid, or combinations of two or more of these. These reducing agents have been found to be surprisingly effective in removing hair color, even in the absence of additional components that may generally be included in hair color removal compositions.

[0022] In various embodiments, the total amount of reducing agents selected from glutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid, citric acid, or combinations of two or more of these can be up to about 20%, such as from about 1% to about 15%, from about 2% to about 13%, from about 3% to about 12%, from about 4% to about 11%, or from about 5% to about 10% by weight, relative to the total weight of the composition.For example, the total amount of reducing agents chosen from glutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid, citric acid, or combinations of two of these may be from about 1% to about 20%, from about 1% to about 15%, from about 1% to about 14%, from about 1% to about 13%, from about 1% to about 12%, from about 1% to about 11%, from about 1% to about 10%, from about 1% to about 9%, from about 1% to about 8%, from about 1% to about 7%, from about 1% to about 6%, from about 1% to about 5%, from about 2% to about 20%, from about 2% to about 15%, from about 2% to about 14%, from about 2% to about 13%, from about 2% to about 12%, . from approximately 2% to approximately 11%, from approximately 2% to approximately 10%, from approximately 2% to approximately 9%, from approximately 2% to approximately 8%, from approximately 2% to approximately 7%, from approximately 2% to approximately 6%, from approximately 2% to approximately 5%, from approximately 3% to approximately 20%, from approximately 3% to approximately 15%, from approximately 3% to approximately 14%, from approximately 3% to approximately 13%, from approximately 3% to approximately 12%, from approximately 3% to approximately 11%, from approximately 3% to approximately 10%, from approximately 3% to approximately 9%, from approximately 3% to approximately 8%, from approximately 3% to approximately 7%, from approximately 3% to approximately 6%, from approximately 3% to approximately 5%, from approximately 4% to approximately 20%, from approximately 4% to approximately 15%, from approximately 4% to approximately 14%, from approximately 4% to approximately 13%, from approximately 4% to approximately 12%, from approximately 4% to approximately 11%, from approximately 4% to approximately 10%, from approximately 4% to approximately 9%, from approximately 4% to approximately 8%, from approximately 4% to approximately 7%, from approximately 4% to approximately 6%, from approximately 4% to approximately 5%, from approximately 5% to approximately 20%, from approximately 5% to approximately 15%from approximately 5% to approximately 14%, from approximately 5% to approximately 13%, from approximately 5% to approximately 12%, from approximately 5% to approximately 11%, from approximately 5% to approximately 10%, from approximately 5% to approximately 9%, from approximately 5% to approximately 8%, from approximately 5% to approximately 7%, from approximately 5% to approximately 6%, from approximately 6% to approximately 20%, from approximately 6% to approximately 15%, from approximately 6% to approximately 14%, from approximately 6% to approximately 13%, from approximately 6% to approximately 12%, from approximately 6% to approximately 11%, from approximately 6% to approximately 10%, from approximately 6% to approximately 9%, from approximately 6% to approximately 8%, from approximately 6% to approximately 7%, from approximately 7% to approximately 20%, from approximately 7% to approximately 15% from approximately 7% to approximately 14%, from approximately 7% to approximately 13%, from approximately 7% to approximately 12%, from approximately 7% to approximately 11%, from approximately 7% to approximately 10%, from approximately 7% to approximately 9%, from approximately 7% to approximately 8%, from approximately 8% to approximately 20%, from approximately 8% to approximately 15%, from approximately 8% to approximately 14%, from approximately 8% to approximately 13%, from approximately 8% to approximately 12%from about 8% to about 11%, from about 8% to about 10%, from about 8% to about 9%, from about 9% to about 20%, from about 9% to about 15%, from about 9% to about 14%, from about 9% to about 13%, from about 9% to about 12%, from about 9% to about 11%, from about 9% to about 10%, from about 10% to about 20%, from about 10% to about 15%, from about 10% to about 14%, from about 10% to about 13%, from about 10% to about 12% by weight, from about 10% to about 11% by weight, relative to the total weight of the composition. For example, the total amount of reducing agents selected from glutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid, citric acid, or combinations of two or more of these may be about 3%, about 4%, about 5%, about 6%, about 7%, about 8%, about 9%, about 10%, about 11%, or about 12% by weight,relative to the total weight of the composition, including any range using one of the above elements as upper and lower limits.

[0023] In some embodiments, the reducing agent comprises, consists essentially of, or consists of α-ketoglutaric acid.

[0024] In various embodiments, the compositions are free or substantially free of reducing agents other than glutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid, and / or citric acid. For example, in some embodiments, the compositions may contain no more than about 20%, or no more than about 15%, or no more than about 10%, or no more than about 5% of other reducing agents.In other embodiments, if one or more reducing agents other than glutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid and / or citric acid are present, these other reducing agents are present in an amount which is not sufficient, in itself, to remove hair colour, for example less than about 3%, less than about 2.5%, less than about 2%, less than about 1.5%, less than about 1%, or less than about 0.5% by weight, relative to the total weight of the composition. Amino acids

[0025] The compositions according to the disclosure comprise at least one amino acid. In some embodiments, the compositions according to the disclosure may comprise at least one, at least two, or at least three amino acids.

[0026] Amino acids are simple organic compounds containing an amino group (-NH2) and at least one acid function selected from among carboxylic acid, sulfonic acid, phosphonic acid, or phosphoric acid functions, together with a side chain (R group) specific to each amino acid. Amino acids may be of natural or synthetic origin, may be of L, D, or racemic form, and may be neutral or ionic.

[0027] Non-limiting examples of useful amino acids include aspartic acid, glutamic acid, alanine, arginine, ornithine, citrulline, asparagine, carnitine, cysteine, glutamine, glycine, histidine, lysine, isoleucine, leucine, methionine, N-phenylalanine, proline, serine, taurine, threonine, tryptophan, tyrosine, and valine. Derivatives of these amino acids may also be used.

[0028] For example, in various embodiments, at least one amino acid may be selected from amino acids such as arginine, histidine, lysine, glycine, methyl derivatives of glycine such as betaine (also called trimethylglycine), proline, or combinations thereof. In some embodiments, the amino acids comprise, consist essentially of, or consist of proline, betaine, arginine, glycine, or a combination of two or more of these.

[0029] The total amount of amino acids can range from about 0.1% to about 10%, from about 0.1% to about 9%, from about 0.1% to about 8%, from about 0.1% to about 7%, from about 0.1% to about 6%, from about 0.1% to about 5%, from about 0.1% to about 4%, from about 0.1% to about 3%, from about 0.1% to about 2%, from about 0.1% to about 1%, from about 0.5% to about 10%, from about 0.5% to about 9%, from about 0.5% to about 8%, from about 0.5% to about 7%, from about 0.5% to about 6%, from about 0.5% to about 5%, from about 0.5% to about 4%, from about 0.5% to about 5%, from about 0.5% to about 4%, from about 0.5% to about 9%, from about 0.5% to about 9%, from about 0.5% to about 8%, from about 0.5% to about 7%, from about 0.5% to about 6%, from about 0.5% to about 5%, from about 0.5% to about 4%, from about 0.5% to about 9%, from about 0.5% to about 9%, from about 0.5% to about 8%, from about 0.5% to about 7 ... % to approximately 3%, from approximately 0.5% to approximately 2%, from approximately 0.5% to approximately 1%, from approximately 1% to approximately 10%, from approximately 1% to approximately 9%, from approximately 1% to approximately 8%, from approximately 1% to approximately 7%, from approximately 1% to approximately 6%, from approximately 1% to approximately 5%, from approximately 1% to approximately 4%, from approximately 1% to approximately 3%, from approximately 1% to approximately 2%, from approximately 1% to approximately 2%, from approximately 1.5% to approximately 10%from about 1.5% to about 9%, from about 1.5% to about 8%, from about 1.5% to about 7%, from about 1.5% to about 6%, from about 1.5% to about 5%, from about 1.5% to about 4%, from about 1.5% to about 3%, from about 1.5% to about 2%, by weight, relative to the total weight of the composition. In some embodiments, the total quantity of amino acids ranges from approximately 1% to approximately 6%, as well as from approximately 1% to approximately 5.5%, from approximately 1% to approximately 5%, from approximately 1% to approximately 4.5%, from approximately 1% to approximately 4%, from approximately 1% to approximately 3.5%, from approximately 1.5% to approximately 5%, from approximately 1.5% to approximately 4%, from approximately 1.5% to approximately 3.5%, or from approximately 1.5% to approximately 3% by weight, relative to the total weight of the composition.

[0030] In an exemplary embodiment, the composition comprises, consists essentially of, or consists of proline, betaine, arginine, glycine, or a combination of two or more of these, in an amount from about 1% to about 6%, such as about 1% to about 5.5%, about 1% to about 5%, about 1% to about 4.5%, about 1% to about 4%, about 1% to about 3.5%, about 1.5% to about 5%, about 1.5% to about 4%, about 1.5% to about 3.5%, or about 1.5% to about 3% by weight, relative to the total weight of the composition. Solvents

[0031] The compositions according to the disclosure comprise at least one solvent. The solvent may be chosen from water, non-aqueous solvents or combinations thereof.

[0032] In various embodiments, the solvent comprises, is essentially made up of, or is made up of water. The total amount of water can vary depending on the desired properties of the composition, for example, consistency, viscosity, etc.

[0033] In some embodiments, non-aqueous solvents may be used, for example, glycerin, Ci4 alcohols, fatty alcohols, fatty ethers, fatty esters, polyols, glycols, vegetable oils, mineral oils, liposomes, laminar lipid materials or combinations thereof. Other non-limiting examples of non-aqueous solvents include alkanediols such as glycerin, 1,2,6-hexanetriol, trimethylolpropane, ethylene glycol, propylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, pentaethylene glycol, dipropylene glycol, 2-butene-1,4-diol, 2-ethyl-1,3-hexanediol, 2-methyl-2,4-pentanediol, (caprylyl glycol), 1,2-hexanediol, 1,2-pentanediol, and 4-methyl-1,2-pentanediol; alkyl alcohols with 1 to 4 carbon atoms such as ethanol, methanol, butanol, propanol, and isopropanol;glycol ethers such as monomethyl ethylene glycol ether, monoethyl ethylene glycol ether, monobutyl ethylene glycol ether, ethylene glycol acetate monomethyl ether, monomethyl diethylene glycol ether, monoethyl diethylene glycol ether, mono-n-propyl diethylene glycol ether, mono-isopropyl ethylene glycol ether, mono-isopropyl diethylene glycol ether, mono-n-butyl ethylene glycol ether, mono-t-butyl ethylene glycol ether, mono-t-butyl diethylene glycol ether, 1-methyl-l-methoxybutanol, monomethyl propylene glycol ether, monoethyl propylene glycol ether, mono-t-butyl propylene glycol ether, mono-n-propyl propylene glycol ether, mono-isopropyl propylene glycol ether, monomethyl dipropylene glycol ether, monoethyl dipropylene glycol ether, mono-n-propyl dipropylene glycol ether and mono-isopropyl dipropylene glycol ether;2-pyrrolidone, N-methyl-2-pyrrolidone, 1,3-dimethyl-2-imidazolidinone, formamide, acetamide, dimethyl sulfoxide, sorbit, sorbitan, acetin, diacetinate, triacetin, sulfolane, or combinations thereof.

[0034] In general, the total amount of solvents in the composition can range from about 50% to about 98% by weight, as well as from about 55% to about 95%, from about 60% to about 95%, from about 60% to about 90%, or from about 65% to about 90%, relative to the total weight of the composition. Amine compounds

[0035] The compositions according to the disclosure may optionally include at least one amine compound. It has been found that, at least in some cases, the inclusion of amine compounds in the compositions can facilitate the color removal process.

[0036] In various embodiments, the amine compounds may be selected from alkanolamines. For example, monoethanolamine, diethanolamine, triethanolamine, aminomethylpropanol, or similar compounds may be added. In In certain embodiments, monoethanolamine acts surprisingly in synergy with reducing agents according to the disclosure.

[0037] If present, the total amount of amine compounds present in the composition can range from about 0.1% to about 20%, from about 1% to about 18%, from about 3% to about 16%, or from about 5% to about 15% by weight, relative to the total weight of the composition. For example, the total amount of amine compounds can range from about 0.1% to about 9%, from about 0.1% to about 8%, from about 0.1% to about 7%, from about 0.1% to about 6%, from about 0.1% to about 5%, from about 0.1% to about 4%, from about 0.1% to about 3%, from about 0.1% to about 2%, from about 0.1% to about 1%, from about 0.5% to about 10%, from about 0.5% to about 9%, from about 0.5% to about 8%, from about 0.5% to about 7%, from about 0.5% to about 6%, from about 0.5% to about 5%, from about 0.5% to about 4%, from about 0.5% to about 3%, from about 0.5% to about 2%. %, from approximately 0.5% to approximately 1%, from approximately 1% to approximately 10%, from approximately 1% to approximately 9%from about 1% to about 8%, from about 1% to about 7%, from about 1% to about 6%, from about 1% to about 5%, from about 1% to about 4%, from about 1% to about 3%, from about 1% to about 2%, from about 1.5% to about 10%, from about 1.5% to about 9%, from about 1.5% to about 8%, from about 1.5% to about 7%, from about 1.5% to about 6%, from about 1.5% to about 5%, from about 1.5% to about 4%, from about 1.5% to about 3%, from about 1.5% to about 2%, from about 2% to about 10%, from about 2% to about 9%, from about 2% to about 8%, from about 2% to about 7%, from about 2% to about 6%, from about 2% to about 5%, from about 2% to about 4%, from about 2% to about 3% by weight, relative to the total weight of the composition. In some embodiments, the total amount of amine compounds ranges from about 1.5% to about 5%, such as from about 1.5% to about 4%, from about 1.5% to about 3.5%, from about 2% to about 6%.approximately 2% to approximately 5%, approximately 2% to approximately 4% by weight, relative to the total weight of the composition.

[0038] In some embodiments, the amine compound comprises, consists essentially of, or consists of alkanolamines, which may be present in a total amount ranging from about 1% to about 12%, such as about 1.5% to about 10%, about 2% to about 8%, or about 3% to about 7% by weight, relative to the total weight of the composition. In some embodiments, the amine compound comprises, consists essentially of, or consists of alkanolamines, which may be present in a total amount of about 1%, about 2%, about 3%, about 4%, about 5%, about 6%, about 7%, about 8%, about 9%, or about 10% by weight, relative to the total weight of the composition. to the total weight of the composition, including any range using any of the above as upper and lower limits.

[0039] In other embodiments, the amine compound comprises, consists essentially of, or consists of monoethanolamine, and monoethanolamine may be present in an amount ranging from about 1% to about 12% by weight, such as about 1.5% to about 10%, about 2% to about 8%, or about 3% to about 7% by weight, relative to the total weight of the composition. In some embodiments, the amine compound comprises, consists essentially of, or consists of monoethanolamine, and monoethanolamine may be present in an amount of about 1%, about 2%, about 3%, about 4%, about 5%, about 6%, about 7%, about 8%, about 9%, or about 10% by weight, relative to the total weight of the composition, including any range using any of these as upper and lower limits. Composed of clay

[0040] The compositions according to the disclosure optionally include at least one clay compound. In some embodiments, the compositions include several clay compounds, for example, at least two clay compounds, at least three clay compounds, etc. The clay compounds may, in some cases, provide odor reduction, which is generally associated with hair color removal compositions.

[0041] By way of non-limiting example, the clay compound may be selected from kaolinite (also called kaolin), bentonite, smectite, hectorite, vermiculite, illite, chorite, halloysite, palygorskite, sepiolite, sesquioxide, imogolite, allophane, or combinations of two or more of these. For example, in one embodiment, kaolin is selected. In another embodiment, bentonite is selected. In various embodiments, the clay compound comprises, consists essentially of, or consists of smectite, hectorite, kaolin, bentonite, or a combination of two or more of these.

[0042] If present, the total amount of clay may vary, but may range from about 0.1% to about 15%, from about 0.5% to about 12%, from about 1% to about 10%, or from about 5% to about 10% by weight, relative to the total weight of the composition. For example, the total amount of clay can range from approximately 1% to approximately 12%, from approximately 1% to approximately 11%, from approximately 1% to approximately 10%, from approximately 1% to approximately 9%, from approximately 1% to approximately 8%, from approximately 1% to approximately 7%, from approximately 1% to approximately 6%, from approximately 1% to approximately 5%, from approximately 1% to approximately 4%, from approximately 1% to approximately 3%, from approximately 1% to approximately 2%, from approximately 2% to approximately 12%, from approximately 2% to approximately 11%, from approximately 2% to approximately 10%, from approximately 2% to approximately 9%, from approximately 2% to approximately 8%, from approximately 2% to approximately 7%, from approximately 2% to approximately 6%, from approximately 2% to approximately 5%, from approximately 2% to approximately 4%, from approximately 2% to approximately 3%, from approximately 3% to approximately 12%, from approximately 3% to approximately 11%, from approximately 3% to approximately 10%, from approximately 3% to approximately 9%, from approximately 3% to approximately 8%, from approximately 3% to approximately 7%, from approximately 3% to approximately 6%, from approximately 3% to approximately 5%, from approximately 3% to approximately 4%, from approximately 4% to approximately 12%, from approximately 4% to approximately 11%, from approximately 4% to approximately 10%, from approximately 4% to approximately 9%, from approximately 4% to approximately 8%, from approximately 4% to approximately 7%, from approximately 4% to approximately 6%, from approximately 4% to approximately 5%, from approximately 5% to approximately 12% from approximately 5% to approximately 11%, from approximately 5% to approximately 10%, from approximately 5% to approximately 9%, from approximately 5% to approximately 8%, from approximately 5% to approximately 7%, from approximately 5% to approximately 6%, from approximately 6% to approximately 12%, from approximately 6% to approximately 11%, from approximately 6% to approximately 10%, from approximately 6% to approximately 9%, from approximately 6% to approximately 8%, from approximately 6% to approximately 7%from about 7% to about 12%, from about 7% to about 11%, from about 7% to about 10%, from about 7% to about 9%, from about 7% to about 8%, from about 8% to about 12%, from about 8% to about 11%, from about 8% to about 10%, from about 8% to about 9%, from about 9% to about 12%, from about 9% to about 11%, from about 9% to about 10%, from about 10% to about 12%, or from about 10% to about 11% by weight, relative to the total weight of the composition. For example, the total quantity of clays may be approximately 3%, approximately 4%, approximately 5%, approximately 6%, approximately 7%, approximately 8%, approximately 9%, approximately 10%, approximately 11%, or approximately 12% by weight, relative to the total weight of the composition, including any range using any of the above as upper and lower limits.

[0043] By way of non-limiting example, the clay compound may comprise, consist essentially of, or consist of bentonite, kaolin, smectite, hectorite, or a combination of two or more of these, and the total amount of clays may be about 3%, about 4%, about 5%, about 6%, about 7%, about 8%, about 9%, about 10%, about 11%, or about 12% by weight, relative to the total weight of the composition, or may be a range using any of the above as upper or lower limits. Surfactants

[0044] The compositions according to the disclosure may optionally include at least one surfactant selected from anionic, nonionic, and / or amphoteric or zwitterionic surfactants. For example, the compositions may include one or more anionic surfactants, one or more nonionic surfactants, or one or more amphoteric / zwitterionic surfactants, or the compositions may include mixtures of surfactants having the same or different ionicities. Anionic surfactants

[0045] In at least some embodiments, the compositions comprise at least one anionic surfactant. The term "anionic surfactant" refers to a surfactant comprising, as ionic or ionizable groups, only anionic groups. A species is said to be "anionic" when it carries at least one permanent negative charge or when it can be ionized as a negatively charged species under the conditions of use of the composition of the invention (for example, the medium or the pH) and does not comprise any cationic charge. These anionic groups may be selected from the groups —CO2H, —CO2, —SO3H, —SO3, —OSO3H, —oso3, —h2po3, —HPO3, —PO32, —H2PO2, =HPO2, —HPO2, =PO2, =POH, and =PO2.

[0046] Anionic surfactants can be sulfate, sulfonate and / or carboxylic (or carboxylate) surfactants, or mixtures thereof.

[0047] Anionic sulfate surfactants comprise at least one sulfate group but do not comprise carboxylate or sulfonate groups. Anionic sulfate surfactants that may be used comprise at least one sulfate group (—OSO3H or —OSO3).

[0048] Non-limiting examples of anionic sulfate surfactants include alkyl sulfates, alkyl ether sulfates, alkylamido ether sulfates, alkylaryl polyether sulfates, monoglyceride sulfates; as well as salts of these compounds; the alkyl groups of these compounds comprising from 6 to 30 carbon atoms, in particular from 12 to 28, better still from 14 to 24 or even from 16 to 22 carbon atoms; the aryl group preferably designating a phenyl or benzyl group; these compounds being polyoxyalkylated, in particular polyoxyethylated, and then preferably comprising from 1 to 50 ethylene oxide motifs and better still from 2 to 10 ethylene oxide motifs.

[0049] Sulfonate anionic surfactants comprise at least one sulfonate function (-SO3H or -SO3) and may optionally also comprise one or more sulfate functions, but do not comprise carboxylate functions. Sulfonate anionic surfactants that may be used comprise at least one sulfonate function (-SO3H or -SO3).

[0050] Non-limiting examples of anionic sulfonate surfactants include alkylsulfonates, alkylamidesulfonates, alkylarylsulfonates, α-olefinsulfonates, paraffin sulfonates, alkylsulfosuccinates, alkyl ether sulfosuccinates, alkylamidesulfosuccinates, alkylsulfoacetates, N-acyltaurates, acylisethionates; alkylsulfolaurates; and also the salts of these compounds; the alkyl groups of these compounds comprising from 6 to 30 carbon atoms, in particular from 12 to 28, better still from 14 to 24 or even from 16 to 22 atoms of carbon; the aryl group preferably designating a phenyl or benzene group; these compounds being polyoxyalkylated, in particular polyoxyethylated, and then preferably comprising from 1 to 50 ethylene oxide motifs and better still from 2 to 10 ethylene oxide motifs.

[0051] Carboxylate anionic surfactants comprise at least one carboxylic acid or carboxylate group (-COOH or -COO-) and may optionally also comprise one or more sulfate and / or sulfonate groups. The carboxylate anionic surfactants that can be used therefore comprise at least one carboxylic acid or carboxylate group (-COOH or -COO-).

[0052] Non-limiting examples of anionic carboxylate surfactants include acylglycinates, acyllactylates, acylsarcosinates, acylglutamates, alkyl-D-galactosideuronic acids, alkyl ether carboxylic acids, alkyl(C6-30 aryl) ether carboxylic acids, alkylamido ether carboxylic acids; and also the salts of these compounds; the alkyl and / or acyl groups of these compounds comprising from 6 to 30 carbon atoms, in particular from 12 to 28, better still from 14 to 24 or even from 16 to 22 carbon atoms; the aryl group preferably designating a phenyl or benzyl group; these compounds being polyoxyalkylated, in particular polyoxyethylated, and then preferably comprising from 1 to 50 ethylene oxide motifs and better still from 2 to 10 ethylene oxide motifs.

[0053] When the anionic surfactant is in salt form, the salt can be chosen from alkali metal salts, such as sodium or potassium salts, ammonium salts, amine salts and in particular amino alcohol salts, and alkaline earth metal salts, such as magnesium salt.

[0054] Examples of amino alcohol salts may include monoethanolamine, diethanolamine and triethanolamine salts, monoisopropanolamine, diisopropanolamine or triisopropanolamine salts, 2-amino-2-methyl-l-propanol salts, 2-amino-2-methyl-l,3-propanediol salts and tris(hydroxymethyl)aminomethane salts.

[0055] In some embodiments, alkali metal or alkaline earth metal salts and in particular sodium or magnesium salts may be chosen, in particular in the form of alkali metal, ammonium, amino alcohol and alkaline earth metal salts, or a mixture of these compounds.

[0056] In exemplary and non-limiting embodiments, the anionic surfactant may be selected from sodium laureth sulfate, ammonium laureth sulfate, disodium lauryl sulfosuccinate, disodium laureth sulfosuccinate, diammonium lauryl sulfosuccinate, sodium diethylhexyl sulfosuccinate, sodium oleyl succinate, sodium lauryl isethionate, sodium lauryl isethionate, cocoyl isethionate of sodium, sodium laureth-5 carboxylate, lauryl ether carboxylic acid, ammonium lauryl sulfate, triethylamine lauryl sulfate, triethylamine laureth sulfate, triethanolamine lauryl sulfate, triethanolamine laureth sulfate, monoethanolamine lauryl sulfate, monoethanolamine laureth sulfate, diethanolamine laureth sulfate, diethanolamine laureth sulfate, sodium lauryl monoglyceride sulfate, sodium laureth sulfate, potassium laureth sulfate, potassium laureth sulfate, ammonium cocoyl sulfate, ammonium lauroyl sulfate, sodium cocoyl sulfate, sodium lauroyl sulfate, potassium cocoyl sulfate, monoethanolamine cocoyl sulfate, sodium tridecyl benzene sulfonate, sodium dodecyl benzene sulfonate, sodium olefin sulfonate in Ci4-i6, sodium lauryl sarcosinate, sodium lauroyl sarcosinate stearoyl sarcosine, lauryl sarcosine, cocoyl sarcosine, sodium methyl cocoyl taurate, sodium methyl lauroyl taurate,Sodium lauroyl glutamate, sodium cocoyl glutamate, disodium cocoyl glutamate, potassium myristoyl glutamate, TEA-cocoyl glutamate, sodium cocoyl glycinate, potassium cocoyl glycinate, sodium cocoyl alaninate, TEA-cocoyl alaninate, or a combination of two or more of these. For example, compositions may include at least one anionic surfactant selected from sodium laureth sulfate, sodium lauryl sulfate, sodium lauroyl sulfate, sodium lauroyl methyl isethionate, or a combination of two or more of these.

[0057] If present, the total amount of anionic surfactants may be up to about 15%, up to about 12%, up to about 10%, up to about 8%, up to about 5%, up to about 3.5%, or up to about 2% by weight, relative to the total weight of the composition. For example, the total amount of anionic surfactants may be from about 0.01% to about 10%, from about 0.1% to about 8%, from about 0.5% to about 6%, or from about 1% to about 4% by weight, relative to the total weight of the composition. In at least some embodiments, the compositions comprise at least one anionic surfactant, and have a total amount of anionic surfactants ranging from about 0.25% to about 5%, from about 0.5% to about 4%, from about 0.75% to about 3%, from about 1% to about 2% by weight, relative to the total weight of the composition. Amphoteric or zwitterionic surfactants

[0058] In at least some embodiments, the composition comprises at least one amphipathic or zwitterionic surfactant. Non-limiting examples of useful amphoteric surfactants include secondary and tertiary aliphatic amine derivatives where the aliphatic radical may be a straight or branched chain and one of the aliphatic substituents contains from about 8 to about 18 carbon atoms and one contains an anionic group such as carboxy, sulfonate, sulfate, phosphate or phosphonate. Examples of amphoteric surfactants include sodium cocaminopropionate, sodium cocaminodipropionate, sodium cocoamphoacetate, sodium cocoamphohydroxypropylsulfonate, sodium cocoamphopropionate, sodium cornamphopropionate, sodium lauraminopropionate, sodium lauroamphoacetate, sodium lauroamphohydroxypropylsulfonate, sodium lauroamphopropionate, cornamphopropionate sodium, sodium lauriminodipropionate, ammonium cocaminopropionate, ammonium cocaminodipropionate, ammonium cocoamphoacetate, ammonium cocoamphohydroxypropylsulfonate, ammonium cocoamphopropionate, ammonium cornamphopropionate, ammonium lauraminopropionate, ammonium lauroamphoacetate, ammonium lauroamphohydroxypropylsulfonate, ammonium lauroamphopropionate, ammonium cornamphopropionate, ammonium lauriminodipropionate, triethanolamine cocaminopropionate, triethanolamine cocaminodipropionate, triethanolamine cocoamphoacetate,triethanolamine cocoamphohydroxypropylsulfonate, triethanolamine cocoamphopropionate, triethanolamine cornamphopropionate, triethanolamine lauraminopropionate, triethanolamine lauroamphoacetate, triethanolamine lauroamphohydroxypropylsulfonate, triethanolamine lauroamphopropionate, triethanolamine cornamphopropionate, triethanolamine lauriminodipropionate, cocoamphodipropionic acid, disodium caproamphoadipropionate, disodium caproamphoadipropionate, disodium capryloamphodiacetate, disodium capryloamphodipriopionate, disodium cocoamphocarboxyethylhydroxypropylsulfonate, disodium cocoamphodiacetate, disodium cocoamphodipropionate, disodium dicarboxyethylcocopropylenediamine, disodium laureth-5 carboxyamphodiacetate, disodium lauriminodipropionate, disodium lauroamphodiacetate, disodium lauroamphodipropionate Disodium oleoamphodipropionate, disodium PPG-2-isodecetethyl-7 carboxyamphodiacetate, lauraminopropionic acid,lauroamphodipropionic acid, lauryl aminopropylglycine and lauryl diethylenediaminoglycine, as well as combinations of two or more of these.

[0059] Betaines may also be used. For example, coco dimethyl carboxymethyl betaine, lauryl dimethyl carboxymethyl betaine, lauryl dimethyl alphacarboxyethyl betaine, cetyl dimethyl carboxymethyl betaine, cetyl dimethyl betaine, lauryl bis-(2-hydroxyethyl) carboxymethyl betaine, stearyl bis-(2-hydroxypropyl) carboxymethyl betaine, oleyl dimethyl gamma-carboxypropyl betaine, lauryl bis-(2-hydroxypropyl) alpha-carboxyethyl betaine, coco dimethyl sulfopropyl betaine, stearyl dimethyl sulfopropyl betaine, lauryl dimethyl sulfoethyl betaine, lauryl bis-(2-hydroxyethyl) sulfopropyl betaine, oleyl betaine or cocamidopropyl betaine, or combinations of two or more of these may be chosen.

[0060] If present, the total amount of amphoteric or zwitterionic surfactants may be up to approximately 15%, such as up to approximately 12%, up to approximately 10%, up to approximately 8%, up to approximately 5%, up to approximately 3.5%, or up to approximately 2% by weight, relative to the total weight of the composition. If present, the total amount of amphoteric or zwitterionic surfactants may be from approximately 0.01% to approximately 10%, from approximately 0.1% to approximately 8%, from approximately 0.5% to approximately 6%, or from approximately 1% to approximately 4% by weight, relative to the total weight of the composition. In at least some embodiments, the compositions comprise at least one amphoteric or zwitterionic surfactant, and have a total amount of amphoteric or zwitterionic surfactants ranging from about 0.25% to about 5%, from about 0.5% to about 4%, from about 0.75% to about 3%, from about 1% to about 2% by weight, relative to the total weight of the composition.In at least some other embodiments, the compositions are free or substantially free of amphoteric surfactants. Non-ionic surfactants.

[0061] Anionic surfactants can be selected from alcohols, α-diols and alkylphenols (in (C1-C20), these compounds being polyethoxylated and / or polypropoxylated and / or polyglycerolated, the number of ethylene oxide and / or propylene oxide groups possibly ranging from 1 to 100, and the number of glycerol groups possibly ranging from 2 to 30, or alternatively compounds comprising at least one fatty chain comprising from 8 to 30 carbon atoms and in particular from 16 to 30 carbon atoms.For example, nonionic surfactants can be selected from monooxyalkylated or polyoxyalkylated alkylphenols (C8-C24), saturated or unsaturated, linear or branched; monooxyalkylated or polyoxyalkylated C8-C30 alcohols, saturated or unsaturated, linear or branched; monooxyalkylated or polyoxyalkylated C8-C30 amides; esters of saturated or unsaturated, linear or branched C8-C30 acids and polyethylene glycols; monoalkylated or polyoxyalkylated esters of saturated or unsaturated, linear or branched C8-C30 acids and sorbitol; monooxyalkylated or polyoxyalkylated vegetable oils; and ethylene oxide and / or propylene oxide condensates, alone or in mixtures.

[0062] By way of example only, ethylene oxide adducts with lauryl alcohol, for example those containing 9 to 50 oxyethylene units or 10 to 12 oxyethylene units (Laureth-10 to Laureth-12); ethylene oxide adducts with behenyl alcohol, for example those containing 9 to 50 oxyethylene units (Beheneth-9 to Beheneth-50); ethylene oxide adducts with cetearyl alcohol (mixture of cetyl alcohol and stearyl alcohol), for example those containing 10 to 30 oxyethylene motifs (Ceteareth-10 to Ceteareth-30); adducts of ethylene oxide with cetyl alcohol, for example those containing 10 to 30 oxyethylene motifs (Ceteareth-10 to Ceteareth-30); adducts of ethylene oxide with stearyl alcohol, for example those containing 10 to 30 oxyethylene motifs (Steareth-10 to Steareth-30); adducts of ethylene oxide with isostearyl alcohol, for example those containing 10 to 50 oxyethylene motifs (Isosteareth-10 to Isosteareth-50);C8-C4o alcohols, e.g. C8-C30, monoglycerol or polyglycerol, such as lauryl alcohol containing 4 mol of glycerol (Polyglyceryl-4 Lauryl Ether), lauryl alcohol containing 1.5 mol of glycerol, oleyl alcohol containing 4 mol of glycerol (Polyglyceryl-4 Oleyl Ether), oleyl alcohol containing 2 mol of glycerol (Polyglyceryl-2 Oleyl Ether), cetearyl alcohol containing 2 mol of glycerol, cetearyl alcohol containing 6 mol of glycerol, oleocetyl alcohol containing 6 mol of glycerol, or octadecanol containing 6 mol of glycerol;polyoxyethylenated fatty esters such as ethylene oxide adducts with lauric acid, palmitic acid, stearic acid or behenic acid esters, and mixtures thereof, for example those containing 9 to 100 oxyethylene units such as PEG-9 to PEG-50 laurate, PEG-9 to PEG-50 palmitate, PEG-9 to PEG-50 stearate, PEG-9 to PEG-50 palmitostearate, PEG-9 to PEG-50 behenate, polyethylene glycol 100 EO monostearate (PEG-100 stearate); glyceryl stearate (glyceryl mono-, di- and / or tristearate); glyceryl ricinoleate; sorbitan palmitate; sorbitan isostearate; sorbitan stearate; sorbitan palmitate; sorbitan trioleate; alkylglucose sesquistearates such as methylglucose sesquistearate; alkylglucose palmitates such as methylglucose or ethylglucose palmitate, etc., or combinations of two or more of them may be chosen.

[0063] If present, the total amount of nonionic surfactants may be up to about 15%, up to about 12%, up to about 10%, up to about 8%, up to about 5%, up to about 3.5%, or up to about 2% by weight, relative to the total weight of the composition. For example, the total amount of nonionic surfactants may be from about 0.01% to about 10%, from about 0.1% to about 8%, from about 0.5% to about 6%, or from about 1% to about 4% by weight, relative to the total weight of the composition. In at least some embodiments, the compositions comprise at least one nonionic surfactant, and have a total amount of nonionic surfactants ranging from about 0.25% to about 5%, from about 0.5% to about 4%, from about 0.75% to about 3%, from about 1% to about 2% by weight, relative to the total weight of the composition.In at least some embodiments, the compositions are free or substantially free of non-ionic surfactants.

[0064] In certain embodiments, the compositions according to the disclosure are free or substantially free of cationic surfactants. Fatty compounds

[0065] Optionally, the compositions according to the disclosure may include at least one fatty compound. In some embodiments, the at least one fatty compound may be selected from lower alkanes, fatty alcohols, fatty acids, fatty acid esters, fatty alcohol esters, oils such as mineral, vegetable, animal, silicone and non-silicone oils, silicone and non-silicone waxes, or combinations of two or more of these. In some embodiments, the compositions include at least one fatty compound of natural origin. In some embodiments, the compositions are free of fatty compounds that are not of natural origin.

[0066] Non-limiting examples of silicone oils include dimethicone, amodimethicone, cyclomethicone, polysilicone-11, phenyl trimethicone, trimethylsilylamodimethicone and stearoxytrimethylsilane. For example, the composition may include at least one silicone selected from amodimethicone, PEG-7 dimethicone, PEG-8 dimethicone, PEG-9 dimethicone, PEG-10 dimethicone, PEG-12 dimethicone, PEG-14 dimethicone, PEG-17 dimethicone, PEG / PPG-3 / 10 dimethicone, PEG / PPG-4 / 12 dimethicone, PEG / PPG-17 / 18 dimethicone, cetyl PEG / PPG-10 / 1 dimethicone, PEG-8 dimethicone benzoate, PEG-7 dimethicone phosphate, PEG-8 dimethicone phosphate, PEG-10 dimethicone phosphate, or a combination of two or more of these.In some preferred embodiments, the compositions include a silicone oil component that comprises, consists essentially of, or consists of dimethicone, amodimethicone, or a combination thereof. In some embodiments, the compositions are free or substantially free of silicone oils and / or silicone waxes.

[0067] In some embodiments, the compositions according to the disclosure may include at least one fatty compound selected from fatty alcohols. In some embodiments, "fatty alcohol" means any alcohol with a carbon chain of C5 or more, such as, for example, C8 or more, C10 or more, or C12 or more, such as from 6 to 30 carbon atoms or from 8 to 30 carbon atoms. Fatty alcohols may be alkoxylated or non-alkoxylated, saturated or unsaturated, and linear or branched. Non-exhaustive examples of fatty alcohols include arachidyl alcohol, behenyl alcohol, caprylic alcohol, cetearyl alcohol, cetyl alcohol, coconut alcohol, decyl alcohol, hydrogenated tallow alcohol, jojoba alcohol, lauryl alcohol, myristyl alcohol, oleyl alcohol, palm alcohol, palm kernel alcohol, stearyl alcohol, tallow alcohol, tridecyl alcohol, or combinations of two of these or more. In some preferred embodiments, the compositions include a fatty alcohol component which comprises, consists essentially of, or consists of cetyl alcohol, stearyl alcohol, cetearyl alcohol, or combinations thereof.

[0068] In some embodiments, the composition may include fatty compounds selected from oils of animal, vegetable or mineral origin (for example, lanolin, squalene, fish oil, perhydrosqualene, mink oil, tortoiseshell oil, soybean oil, grapeseed oil, sesame oil, corn oil, rapeseed oil, sunflower oil, cottonseed oil, avocado oil, olive oil, castor oil, jojoba oil, peanut oil, sweet almond oil, palm oil, cucumber oil, hazelnut oil, apricot kernel oil, wheat germ oil, tamanu oil, macadamia oil, coconut oil, cereal germ oil, candlenut oil, thistle oil, candelilla oil, safflower oil, or shea butter), linear or branched hydrocarbons (for example, polybutene, polyisobutene) hydrogenated, polyisoprene, polydecenes such as hydrogenated polydecene, and / or linear alkanes,branched and / or cyclic fatty acids that are optionally volatile, such as, for example, isohexadecane, isododecane, isodecane or isohexadecane), optionally branched and / or unsaturated fatty acids (for example, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, linoleic acid, linolenic acid or isostearic acid), fatty alcohols other than those described above (for example, alkoxylated fatty alcohols), mono- and / or polyesters of fatty acids and / or fatty alcohols (for example, mono- and polyesters of hydroxy acids and fatty alcohols, esters of benzoic acid and fatty alcohols, polyesters of polyols, C5-C9 dipentaerythrityl esters, trimethylolpropane polyesters, propylene glycol polyesters or castor oil polyesters) hydrogenated oils), perfluorinated and / or organofluorinated oils, fluorosilicone oils,or mixtures of two or more of these. Non-limiting examples of fatty acids optionally include branched-chain and / or unsaturated fatty acids such as myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, linoleic acid, linolenic acid, isostearic acid, or combinations of two or more of these.

[0069] If present, the total amount of fatty compounds in the composition may be up to about 20%, such as up to about 18%, up to about 15%, up to about 12%, up to about 10%, up to about 8%, or up to about 5% by weight, relative to the total weight of the composition. For example, the total amount of fatty compounds may be from about 0.1% to about 20%, from about 0.5% to about 18%, from about 1% to about 15%, from about 1.25% to about 12%, or from about 1.5% to about 10% by weight, relative to the total weight of the composition. In at least In certain embodiments, the compositions are free or essentially free of fatty compounds. Thickening agents

[0070] The compositions according to the disclosure optionally include at least one thickening agent. Useful thickening agents include, but are not limited to, semi-synthetic polymers, such as semi-synthetic cellulosic derivatives; synthetic polymers, such as carbomers, poloxamers and beheneth-25 acrylate / methacrylate copolymers; acrylate copolymers; polyethyleneimines (e.g., PEL10); natural polymers, such as acacia, tragacanth, alginates (e.g., sodium alginate), carrageenan; vegetable gums, such as xanthan gum, guar gum, petroleum jelly; waxes; associated particulate colloids, such as bentonite, colloidal silicon dioxide and microcrystalline cellulose; celluloses, such as hydroxyethylcellulose and hydroxypropylcellulose; and guars, such as hydroxypropyl guar.

[0071] In some embodiments, the thickening agent may be selected from associative thickening polymers such as anionic associative polymers, amphoteric associative polymers, cationic associative polymers, or nonionic associative polymers. A non-limiting example of an amphoteric associative polymer is beheneth-25 acrylate / methacrylate copolymer, and non-limiting examples of anionic associative polymers include acrylate copolymer and acrylates-4 crosslinked polymer.

[0072] If present, the total amount of thickening agents may range from about 0.001% to about 5%, such as from about 0.01% to about 4%, from about 0.1% to about 3.5%, from about 0.2% to about 3%, from about 0.3% to about 2.5% by weight, from about 0.4% to about 2%, from about 0.5% to about 1.5%, or from about 0.5% to about 1% by weight, relative to the total weight of the composition. Carboxylic acids

[0073] The compositions according to the disclosure optionally include at least one carboxylic acid. In some embodiments, the compositions include several carboxylic acids, for example, at least two carboxylic acids, at least three carboxylic acids, etc. For example, mono-, di-, or tri-carboxylic acids may be chosen.

[0074] In various embodiments, at least one carboxylic acid may be selected from citric acid, maleic acid, succinic acid, aspartic acid, glutamic acid, lactic acid, malic acid, tartaric acid, their salts, or their combinations, preferably citric acid, lactic acid, their salts, or combinations thereof. In one embodiment, citric acid may be chosen.

[0075] If present, the total amount of carboxylic acids may be up to about 3%, such as up to about 2.5%, up to about 2%, up to about 1.5%, up to about 1%, or up to about 0.5% by weight, relative to the total weight of the composition. For example, the total amount of carboxylic acids may be from about 0.001% to about 3%, such as from about 0.01% to about 2.5%, from about 0.1% to about 2%, or from about 0.1% to about 1.5%, relative to the total weight of the composition. In some embodiments, the total amount of mono-, di- and tricarboxylic acids does not exceed 1%, for example, can range from about 0.001% to about 1%, from about 0.001% to about 0.9%, from about 0.001% to about 0.8%, from about 0.001% to about 0.7%, from about 0.001% to about 0.6%, from approximately 0.001% to approximately 0.5%, from approximately 0.001% to approximately 0.4%, from approximately 0.001% to approximately 0.3%, from approximately 0.001% to approximately 0.2%, from approximately 0.001% to approximately 0.1%, relative to the total weight of the composition.

[0076] In some embodiments, the compositions are free or essentially free of carboxylic acids, or are free or essentially free of mono-, di- and / or tricarboxylic acids. In other embodiments, the compositions are free or essentially free of citric acid. Auxiliary components

[0077] The compositions according to the disclosure may optionally include one or more auxiliary components. Non-limiting examples include preservatives, perfumes, pH adjusters (e.g., citric acid, maleic acid, malic acid, malonic acid, etc.), salts, antioxidants, vitamins (e.g., ascorbic acid, tocopherol), vitamin derivatives, botanical extracts, buffers, sequestering agents, and the like.

[0078] The total quantity of auxiliary agents, if present, is typically in the range of about 0.01% to about 15%, relative to the total weight of the composition. For example, in some embodiments, the individual quantities of each component or the total quantity of components may range from approximately 0.1% to approximately 10%, from approximately 0.1% to approximately 8%, from approximately 0.1% to approximately 5%, from approximately 0.1% to approximately 4%, from approximately 0.1% to approximately 3%, from approximately 0.1% to approximately 2%, from approximately 0.25% to approximately 10%, from approximately 0.25% to approximately 8%, approximately 0.25% to approximately 5%, approximately 0.25% to approximately 4%, approximately 0.25% to approximately 3%, approximately 0.25% to approximately 2%, approximately 0.5% to approximately 10%, approximately 0.5% to approximately 8%, approximately 0.5% to approximately 5%, approximately 0.5% to approximately 4%, approximately 0.5% to approximately 3%, approximately 0.5% to approximately 2%, approximately 0.75% to approximately 10%, approximately 0.75% to approximately 8%, approximately 0.75% to about 5%, about 0.75% to about 4%, about 0.75% to about 3%, or about 0.75% to about 2% by weight, relative to the total weight of the composition.

[0079] In some embodiments, the compositions may be free of sulfites, bisulfites, metabisulfites, persulfates, peroxides and / or ammonia. In still other embodiments, the compositions may be essentially free from sulfites, bisulfites, metabisulfites, persulfates, peroxides and / or ammonia, for example, may comprise less than 5%, less than 4.5%, less than 4%, less than 3.5%, less than 3%, less than 2.5%, less than 2%, less than 1.5%, less than 1.25%, less than 1%, less than 0.75%, less than 0.5%, less than 0.4%, less than 0.3%, less than 0.2%, less than 0.1%, less than 0.05% or less than 0.01% of a total amount of sulfites, bisulfites, metabisulfites, persulfates, peroxides or ammonia, or of a total amount of any combination of two or more of these.

[0080] The compositions can be in any suitable form. For example, the compositions can be a liquid, a gel, a cream-gel, a cream, a serum, etc. Advantageously, the compositions can be used as a one-part hair color removal composition, as opposed to known hair color removal systems that require the application of several compositions to effectively remove hair color.

[0081] The pH of the composition is generally acidic, namely: below 7, such as below about 6, below about 5 or below about 4. For example, compositions according to the disclosure may have a pH ranging from about 1 to about 6, such as from about 2 to about 5. In some embodiments, the compositions have a pH ranging from about 2.5 to about 5, from about 2.75 to about 4.75, or from about 3 to about 4.5. II. PROCESSES

[0082] The disclosure further relates to methods for removing color from keratin fibers, particularly from hair that has been previously dyed, such as with an oxidative dye. The methods include applying a composition according to the disclosure to the keratin fibers, optionally leaving the composition on the keratin fibers for a period of time (a "resting period," "resting period," or "application period"), and optionally rinsing the composition from the keratin fibers. Thus, the methods may include a two-step process, which is simpler and more efficient than known three-step or more-step processes where multiple compositions are applied to the hair for color removal before rinsing.

[0083] The appropriate exposure time will be determined according to the color to be removed, and in various embodiments may last up to approximately 1 minute, up to about 2 minutes, up to about 5 minutes, up to about 10 minutes, up to about 20 minutes, up to about 30 minutes, up to about 45 minutes, up to about 1 hour, up to about 2 hours, etc., such as from about 1 minute to about 60 minutes, from about 2 minutes to about 45 minutes, from about 5 minutes to about 40 minutes, or from about 10 minutes to about 30 minutes.

[0084] Surprisingly, the compositions and processes according to the disclosure effectively remove the color imparted to hair by previously applied oxidative dyes without using sulfites, bisulfites, metabisulfites, persulfates, peroxides, and / or ammonia, and can prevent or substantially prevent oxidative dyes from reoxidizing so that the color does not return. Thus, in at least some embodiments, the compositions are free or substantially free of sulfites, bisulfites, metabisulfites, persulfates, peroxides, and / or ammonia, and / or the processes include only compositions that are free or substantially free of sulfites, bisulfites, metabisulfites, persulfates, peroxides, and / or ammonia.This advantage has been remarkably observed on hair even several months after the original color has been removed with compositions and processes as disclosed, and therefore the removal of the color is considered permanent, which is a benefit not obtained with traditional hair color removal compositions that use reducing agents.

[0085] In addition, the synergistic combination of components in the compositions and processes according to the disclosure also remarkably reduces or eliminates the odor generally encountered with hair color removal compositions and processes.

[0086] After describing in detail the numerous embodiments of the present invention, it will become apparent that modifications and variations are possible without departing from the scope of the disclosure defined in the appended claims. Furthermore, it should be noted that all the examples in this disclosure, while illustrating numerous embodiments of the disclosure, are provided by way of non-limiting examples and should therefore not be considered as limiting the various aspects thus illustrated. It should be understood that all definitions in this document are provided solely for the purposes of this disclosure.

[0087] As used herein, the terms "comprising", "having" and "including" (or "comprehension", "having" and "include") are used in their open, non-limiting sense.

[0088] In this application, the expressions "one or more" and "at least one" are interchangeable and expressly include individual components as well as mixtures / combinations. Similarly, the expression "a salt of it" also refers to "salts of it." Thus, when the disclosure refers to "at least one," the expression "a salt of it" also refers to "salts of it." less one element chosen from the group consisting of A, B, C, D, E, F, a salt of these, or mixtures of these,” it indicates that one or more of A, B, C, D and F may be included, one or more of a salt of A, a salt of B, a salt of C, a salt of D, a salt of E and a salt of F may be included, or a mixture of any two of A, B, C, D, E, F, one or more salts of A, one or more salts of B, one or more salts of C, one or more salts of D, one or more salts of E and one or more salts of F may be included.

[0089] The expression "and / or" should be understood as including both conjunctive and disjunctive clauses. For example, "water and / or non-aqueous solvents" means "water and non-aqueous solvents" as well as "water or non-aqueous solvents", and expressly covers cases of either.

[0090] As used herein, the expressions "and mixtures thereof," "and a mixture of these," "and a combination of these," "or mixtures of these," "or a mixture of these," "or combinations of these," and "or a combination of these" are used interchangeably to indicate that the list of components immediately preceding the phrase, such as "A, B, C, D, or mixtures of these," means that the component(s) can / may be chosen from A, B, C, D, from A + B, from A + B + C, from A + D, from A + C + D, etc., without limitation on the variations thereof. Thus, the components may be used individually or in any combination thereof.

[0091] For the purposes of this disclosure, it should be noted that, for the sake of brevity, some of the quantitative expressions given herein are not qualified with the term "approximately". It is understood that, whether the term "approximately" is used explicitly or implicitly, each quantity given herein is intended to refer to the actual value given, and is also intended to refer to the approximation of that value given that would be reasonably deduced by a person skilled in the art, including approximations due to experimental and / or measurement conditions for that value.

[0092] All ranges and quantities stated herein are intended to include subranges and quantities using any disclosed point as a bound, and all bounds are intended to be inclusive unless expressly stated otherwise. Thus, a range of "1% to 10%, such as 2% to 8%, such as 3% to 5%" is intended to encompass ranges of "1% to 8%", "1% to 5%", "2% to 10%", and so on. All numbers, quantities, ranges, etc., are intended to be modified by the term "approximately", whether or not expressly stated, unless expressly stated otherwise. Similarly, a given range of "approximately 1% to 10%" is intended to have its bounds of both 1% and 10% modified by the term "approximately". The term "approximately" is used in this document to indicate a difference of up to + / - 10% from the The indicated number, such as + / - 9%, + / - 8%, + / - 7%, + / - 6%, + / - 5%, + / - 4%, + / - 3%, + / - 2%, or + / - 1%. Similarly, all range boundaries are understood to be disclosed individually, such that, for example, a range of 1:2 to 2:1 is understood to disclose a ratio of 1:2 to 2:1.

[0093] As used here, if a component is described as being present "in an amount less than or equal to" a certain amount, it is expected that this component is in fact present in the composition, namely, present in an amount greater than 0%.

[0094] All quantities and ratios indicated herein are given on the basis of the total weight of the composition, unless otherwise stated. Unless otherwise stated, all percentages indicated herein are by weight of active ingredient.

[0095] As used herein, the expression "applying a composition to keratinous fibers," and its variations, is intended to denote the contact of keratinous fibers, such as hair, with at least one of the compositions of the disclosure, in any manner whatsoever. It may also mean the contact of keratinous fibers with an effective amount of the composition.

[0096] In this document, the term "salts" throughout the disclosure may include salts containing a counterion such as an alkali metal, an alkaline earth metal, or an ammonium counterion. This list of counterions, however, is not exhaustive. Salts also include a dissociated form of a compound, for example, in an aqueous solution.

[0097] As used in this document, the expressions "substantially free" or "essentially free" mean that the specific material may be present in small amounts that do not significantly affect the basic and novel characteristics of the compositions as disclosed. For example, there may be less than 2% by weight of a specific material added to a composition, relative to the total weight of the compositions (provided that an amount less than 2% by weight does not significantly affect the basic and novel characteristics of the compositions as disclosed). Similarly, the compositions may include less than 2%, less than 1.5%, less than 1%, less than 0.5%, less than 0.1%, less than 0.05%, or less than 0.01%, or none of the specified materials.All components positively presented in this disclosure may be negatively excluded from the claims; for example, a claimed composition may be "free," "substantially free" (or "significantly free") of one or more components that are positively presented in this disclosure. The term "substantially free" or "essentially free" as used here may also mean that the specific material is not. added to the composition, but it may still be present in a raw material included in the composition.

[0098] As used herein, the terms “treat,” “treated,” “treatment,” and variations thereof are not intended to be limiting, but rather are intended to simply indicate that one or more compositions is / are applied to the hair and possibly removed from the hair. For example, hair that is “treated” with a composition according to the disclosure may have had the composition applied, and / or may have had the composition applied and removed, for example, by rinsing or towel drying. As another example, hair that is “treated” with a composition according to the disclosure may have had the composition applied, and / or may have had the composition applied and rinsed.

[0099] For the purposes of this disclosure, the terms "color removal," "hair color removal," and variations thereof should be understood as referring to the removal of artificial hair color resulting from previously applied oxidative dyes. It should be understood that color removal may include the removal of all color, or it may include the removal of various color tones. Therefore, in some embodiments, an overall lightening of hair color will be observed (e.g., higher AE), whereas in other embodiments, even if the overall color change is not considered significant, a variation of one or more of the L*, a*, or b* values ​​will be observed.

[0100] The following examples are intended to illustrate embodiments of this disclosure but are not intended to be limiting. It will be obvious to those skilled in the art that various modifications and variations can be made to the compositions and processes of the invention without departing from the spirit or scope of the invention. EXAMPLES

[0101] The following examples are intended to be non-limiting and explanatory only. In the Examples, unless otherwise indicated, quantities are expressed as a percentage by weight (% by weight) of active substances, relative to the total weight of the composition.

[0102] In these examples, the hair color change is evaluated using the CIE L* a* b* system, with Colorshot MS, where the change is determined by evaluating the hair color after treatment (L*2, a*2, b*2) against the hair color before treatment (L*ba*bb*i). The color change (AE) is defined by:

[0103] In this system, the three parameters represent, respectively, color intensity (L*), the green / red color axis (a*), and the blue / yellow color axis (b*). The higher the value of L*, the lighter the color; the higher the value of a*, the redder the color; and the higher the value of b*, the yellower the color. The greater the value of AE, the greater the difference in color between the treated hair and the hair before treatment. Example 1 - Compositions

[0104] Compositions 1A-1E according to disclosure and comparative composition Cl were prepared as shown in Table 1. The pH of each composition was approximately 3.5.

[0105] [Tables 1] IA IB IC 1D 1E Cl Thioglycolic acid 3.0 Thiolactic acid 5.0 Glycolic acid 7.0 7.0 α-Ketoglutaric acid 10 10 10 10 10 Betaine 1.6 1.6 1.6 Arginine 2.5 3.0 2.5 Glycine 5.0 Ethanolamine 3.7 1.7 Triethanolamine 15 Bentonite 10 5.0 10 Xanthan gum 0.7 0.7 0.7 0.7 0.7 Citric acid 5.0 Sodium lauryl sulfate 1.5 1.5 1.5 1.5 Sodium lauroyl methyl isethionate 1.7 Water Qs per 100 Qs per 100 Qs per 100 Qs per 100 Qs per 100 Qs for 100

[0106] Example 2 - Evaluation of color removal

[0107] Six strands of permed hair, ~90% grey hair, were coloured with a commercially available oxidative hair dye composition. The oxidative hair dye composition was mixed in a 1:1 ratio with 20V hydrogen peroxide developer to form a hair dye mixture, and the hair dye mixture was applied to the strands at a rate of approximately 3 grams per gram of hair. The strands were left at room temperature for approximately 35 minutes, rinsed, shampooed with a commercial shampoo, rinsed again, and left to air dry.

[0108] Once the strands were dry, they were treated as follows. Each of the compositions 1A-1D and Cl was applied to separate the strands at a rate of approximately 2 grams per gram of hair. The strands were left to rest for 30 minutes at 33°C. The strands were then rinsed for approximately 30 seconds, shampooed with a commercial shampoo, rinsed, shampooed again, rinsed again, and then blow-dried.

[0109] A strand colored with the hair dye mixture was not treated with a color-removing composition and was used as a control.

[0110] The color of each of the strands was then evaluated with the CIE L* a* b* system, as described above.

[0111] First, the color of each strand was evaluated immediately after the strands were treated as described above and dried (time = To), in order to assess the effectiveness of the color removal. Table 2A shows the values ​​L*, a*, b* and AE at To.

[0112] [Tables 2 A] L* a* b* AE L*!, a*!, b*! CONTROL 5.90 1.64 0.20 - L*2, a*2, b*2 IA 49.19 8.92 25.10 50.47 IB 43.90 8.25 24.68 45.68 IC 36.82 7.86 17.11 35.78 1D 28.66 8.53 9.68 25.60 Cl 7.53 0.04 0.74 2.35

[0113] Table 2A demonstrates that the compositions according to the disclosure are surprisingly more effective at removing hair color compared to the compositions not in accordance with the disclosure, as shown by the significantly higher AE values ​​for strands treated with compositions 1A-1D compared to the strand treated with composition CL. As a difference in AE of ~2 is visible to the naked eye, these results are significant.

[0114] The color of the strands treated with compositions 1A-1C and Cl was re-evaluated after one week (time = T7) to assess the durability of the color removal. Table 2B shows the values ​​L*, a*, b*, and AE at T7.

[0115] [Tables2B] L* a* b* AE L*!, a*!, b*! CONTROL 5.90 1.64 0.20 - L*2, a*2, b*2 IA 46.78 8.02 23.18 47.33 IB 44.68 7.66 23.35 45.56 IC 39.92 7.11 21.13 40.32 Cl 7.53 0.04 0.74 2.35

[0116] Although the L*, a*, b* and AE values ​​for the strands treated with compositions 1A-1C are slightly higher or lower in Table 2B than in Table 2A, these differences are considered to fall within an acceptable range. Visually, there was no color difference between the strands at T7 and T0.

[0117] Tables 2A and 2B therefore demonstrate that color removal with compositions according to the disclosure is not only very effective, but also that the color removal lasts for at least one week. Furthermore, it was observed that even after several months, the strands treated with compositions 1A-1D appeared to visually retain the same color, demonstrating that color re-oxidation does not occur.

[0118] Example 3 - Compositions including amines

[0119] Compositions 3A-3C according to the disclosure were prepared as shown in Table 3. The pH of each composition was approximately 3.5.

[0120] [Tables3] 3A 3B 3C Glycolic acid 7.0 7.0 7.0 Glycine 5.0 5.0 5.0 Monoethanolamine 5.7 Triethanolamine 15 Aminomethylpropanol 8.0 Water Qs per 100 Qs per 100 Qs per 100

[0121] Example 4 - Evaluation of color removal

[0122] Three strands of virgin hair, ~90% grey hair, and four strands of permed hair, ~90% grey hair (7 strands in total) were coloured Using a commercially available oxidative hair dye, the hair was mixed in a 1:1 ratio with 20V hydrogen peroxide developer to form a hair dye mixture. This mixture was then applied to the hair strands at a rate of approximately 3 grams per gram of hair. The strands were left at room temperature for about 35 minutes, rinsed, shampooed with a commercial shampoo, rinsed again, and allowed to air dry.

[0123] Once the strands were dry, they were treated as follows. Each of compositions 3B and 3C was applied to separate virgin strands, and each of compositions 3A-3C was applied to separate permed strands, at a rate of approximately 2 grams per gram of hair, so that the color-removing capacity of each composition could be evaluated both on virgin hair colored with the hair dye mixture and on permed hair colored with the hair dye mixture. The strands were left to rest for 30 minutes at 33°C. The strands were then rinsed for approximately 30 seconds, shampooed with a commercial shampoo, rinsed, shampooed again, rinsed again, and then blow-dried.

[0124] A virgin strand and a permed strand colored with the hair dye mixture but not treated with a color removal composition were used as controls.

[0125] The color of each strand was evaluated using the CIE L* a* b* system immediately after the strands were treated as described above and dried, in order to assess the effectiveness of the color removal. Tables 4A-4B show the L*, a*, b*, and AE values ​​for virgin (Table 4A) and permed (Table 4B) strands.

[0126] [Tables4A] L* a* b* AE L*ba*bb*i CONTROL 5.90 1.64 0.20 - L*2, a*2, b*2 3B 17.96 6.28 5.91 14.13 3C 6.07 1.91 -0.12 0.45

[0127] [Tables4B] L* a* b* AE L*ba*bb*i CONTROL 5.90 1.64 0.20 - L*2, a*2, b*2 3A 28.66 8.53 9.68 25.60 3B 34.71 8.94 15.80 33.56 3C 30.74 8.73 13.70 29.14

[0128] The data in Tables 4A-4B show that the addition of various amines can improve the color-removing properties of reducing agents according to disclosure, particularly on hair that has been previously chemically treated. Furthermore, monoethanolamine surprisingly offers the greatest improvement in color removal, even compared to other amine compounds.

[0129] Example 5 - Additional compositions

[0130] Compositions 5A-5D according to the disclosure can be prepared as shown in Table 5, and are also intended to offer synergistic hair colour removal benefits.

[0131] [Tables5] 5A 5B 5C 5D Thioglycolic acid 15 Thiolactic acid 9 Glyoxylic acid 3 Glutaric acid 12 Proline 1 4 Betaine 5 6 Arginine 5 Hydroxypropyl guar 1 0.5 1.5 2 Sodium lauroyl sulfate 2 2.5 1.5 1 Additives (pH adjuster, preservative, per fume) <3 < 3 <3 < 3 Solvent Qs per 100 Qs per 100 Qs per 100 Qs per 100

[0132] The above examples confirm that the compositions and processes according to the disclosure enhance the removal of hair color in a surprising and unexpected way, compared to the compositions and processes not in accordance with the disclosure.

Claims

Demands

1. Hair colour removal composition comprising: (a) at least one reducing agent selected from glutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid, citric acid, or combinations of two of these, preferably comprising α-ketoglutaric acid; (b) at least one amino acid; (c) at least one amine compound which is monoethanolamine; and (d) at least one solvent, wherein the total amount of reducing agents (a) is from 5% to 20% by weight, relative to the total weight of the composition.

2. Hair color removal composition according to claim 1, wherein the total amount of reducing agents (a) is from 5% to 10% by weight, relative to the total weight of the composition.

3. Hair color removal composition according to claim 1 or claim 2, wherein the total amount of amino acids (b) ranges from 0.1% to 10%, preferably from 0.5% to 8%, more preferably from 1% to 6% by weight, relative to the total weight of the composition.

4. Hair color removal composition according to any one of the preceding claims, wherein the total amount of amine compounds (c) ranges from 0.1% to 20%, preferably from 1% to 18%, more preferably from 3% to 16%, most preferably from 5% to 15% by weight, relative to the total weight of the composition.

5. Hair color removal composition according to any one of the preceding claims, further comprising at least one component selected from thickening agents, fatty compounds, clay compounds, carboxylic acids, amino acids, anionic surfactants, non-ionic surfactants, amphoteric / zwitterionic surfactants, or combinations thereof.

6. A hair color removal composition according to any one of the preceding claims, wherein the composition is free from reducing agents other than acid glutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid and / or citric acid.

7. Hair colour removal composition comprising: (a) α-ketoglutaric acid; (b) at least one amino acid selected from arginine, glycine, betaine, proline or combinations of two or more of these; (c) monoethanolamine; and (d) water, wherein the pH of the composition is from 1 to 6, preferably from 2 to 5, and wherein the total amount of reducing agents (a) is from 5% to 20% by weight, relative to the total weight of the composition.

8. Hair color removal composition according to claim 7, wherein the composition further comprises at least one additional reducing agent selected from glutaric acid compounds other than α-ketoglutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid, citric acid, or combinations of two of these.

9. A method for removing oxidative hair dye from hair, the method comprising: (i) applying a composition according to any one of the preceding claims to the hair; (ii) optionally, leaving the composition on the hair for a period of 1 to 60 minutes; and (iii) rinsing the hair.